これは、ページをデータベース (MySQL) に接続するための私のコードです。
<html>
<body>
<title>Home</title>
<script language="javascript">
function checkTextField(field) {
if (field.value == '') {
alert("Field is empty");
}
}
function a(id) {
var ay = document.getElementById(id).value;
var pattern = /\d{4}-\d{2,4}/;
if(pattern.test(ay))
{
ay.style.backgroundColor="#52F40C";
return true;
}
else
{
window.alert ("Enter in YYYY-YY or YYYY-YYYY format");
ay.style.backgroundColor="red";
ay.focus();
ay.value="";
return false;
}
}
function c()
{
var n=document.getElementById("name");
var re=/^[a-zA-Z]+ ?[a-zA-Z]*$/;
if(re.test(n.value))
{
n.style.backgroundColor="#52F40C";
}
else
{
window.alert("Invalid place name");
n.style.backgroundColor="#F40C0C";
n.focus();
n.value="";
}
}
function d()
{
var n= document.getElementById("date");
var re=/^(?:(0[1-9]|1[012])[\- \/.](0[1-9]|[12][0-9]|3[01])[\- \/.](19|20)[0-9]{2})$/;
if (re.test(n.value))
{
n.style.backgroundColor="#52F40C";
}
else
{
window.alert("enter in MM DD YYYY format");
n.style.backgroundColor="#F40C0C";
n.focus();
n.value="";
}
}
</script>
<body style="background-color:#708090;">
<?php
if (isset($_POST['submit']))
{
$mysqli= new mysqli("localhost","admin","admin", "nba" );
if($mysqli === false)
{
die("could not connect:" . mysqli_connect_error());
}
if ($inputError != true && empty($_POST['ayear']) )
{
echo 'ERROR: Please enter a valid year';
$inputError = true;
}
else
{
$ayear = $mysqli-> escape_string($_POST['ayear']);
}
if ($inputError != true && empty($_POST['fyear']) )
{
echo 'ERROR: Please enter a valid year';
$inputError = true;
}
else
{
$fyear = $mysqli-> escape_string($_POST['fyear']);
}
if ($inputError != true)
{
$sql="INSERT INTO year VALUES ('$ayear','$fyear')";
if ($mysqli-> query($sql)==true)
{
echo'Added';
}
else
{
echo"ERROR: Could not execute query : $sql. " . $mysqli-> error;
}
}
$mysqli-> close();
}
?>
<h1 style="font-family:Verdana;text-align:center;">National Board of Accrediation <br>of<br> Programme</h1>
<br>
<div id="menu" style="background-color:#800000;height:25px;width:1000px">
<b><font "style="font-family:Verdana"><a href="part1.html" title="Institutional Summary"style="color: #000000">Part I</a>               <a href="part2.html"title="Departmental/Program Summary"style="color: #000000">Part II</a>               <a href="part3.html"title="Curricula,Syllabi,PEOs and POs"style="color: #000000">Part III</a>               <a href="part4.html" title="List of Documents to be made available during the visit"style="color: #000000">Part IV</a></font></b>
</div>
</p>
<h4 style="font-family:Verdana;text-align:center;"><b><u>Declaration</u></b></h4>
<form method="post" action="home.html">
<p> (<input type="text" size="9" name="ayear" id="ayear" onChange="a('ayear');" onBlur="checkTextField(this);">) (<input type="text" size="9" name="fyear" id="fyear" onChange="a('fyear');" onBlur="checkTextField(this);">).</p>
<p>Place:<input type="text" size="20" name="name" id="name" onChange="c();" onBlur="checkTextField(this);"></p>
<p>Date:<input type="text" size="10" name="date" id="date" onChange="d();" onBlur="checkTextField(this);">
<input type="submit" name="submit" value="Submit"/>
</form>
</body>
</html>
データベース接続が機能していません。どうすればこれを修正できますか? コードの問題は何ですか?